John Mayer RIPPED By Shooter JenningsYou're a Total 'Douche'

10/31/2012 2:28 PM PDT

John Mayer RIPPED By Shooter Jennings -- You're a Total 'Douche'

Breaking News

John Mayer is a douchebag ... in fact, he's "King Douche" ... this according to country music bigshot Shooter Jennings -- the son of country legend Waylon Jennings.

Shooter -- a powerful country music DJ -- just went after Mayer on Twitter ... saying, "I love how the 'neil young of our generation' self-naming king douche grows his hair out + buys a place in Montana just to do [Rolling Stone] article."